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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
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Visual Basic 6 Black Book 
(Publisher: The Coriolis Group) 
Author(s): Steven Holzner 
ISBN: 1576102831 
Publication Date: 08/01/98 
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Table 21.1MAPIMessages control email methods. 
Function 
Method 
Get email from Inbox 
Fetch 
Send email with Compose box Send 
Send email 
Send 
Save a message 
Save 
Copy a message for reply 
Copy 
Compose email 
Compose 
Reply to a message 
Reply 
Reply to all messages 
ReplyAll 
Forward a message 
Forward 
Delete a message 
Delete 
Show address book 
Show 
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
Show message details 
Show 
Resolve recipient name 
ResolveName 
Delete recipient 
Delete 
Delete attachment 
Delete 
Table 21.2MAPIMessages control properties. 
Property 
Description 
Action 
Obsolete. Performs actions now performed by 
methods. 
AddressCaption 
Sets caption of the address book. 
AddressEditFieldCount 
Sets which address book edit controls to display. 
AddressLabel 
Sets appearance of “To” edit control in address book. 
AddressModifiable 
Sets whether address book can be modified by user. 
AttachmentCount 
Gets total number of attachments for current message. 
AttachmentIndex 
Sets currently indexed attachment. 
AttachmentName 
Sets name of the currently indexed attachment. 
AttachmentPathName 
Sets full path name of the currently indexed 
attachment. 
AttachmentPosition 
Sets position of indexed attachment in the message 
body. 
AttachmentType 
Sets type of currently indexed attachment. 
FetchSorted 
Sets message order when creating message set. 
MsgConversationID 
Sets the conversation thread identification value. 
MsgCount 
Gets the total number of messages in message set. 
MsgDateReceived 
Gets date on which current indexed message was 
received. 
MsgID 
Gets string identifier of current message. 
MsgIndex 
Sets index number of current message. 
MsgNoteText 
Text of current message. 
MsgOrigAddress 
Gets email address of originator of current message. 
MsgOrigDisplayName 
Gets originator’s name for current message. 
MsgRead 
True or False depending on whether message has been 
read. 
MsgReceiptRequested 
Indicates if return receipt is requested for message. 
MsgSent 
Indicates if message has been sent to mail server. 
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
MsgSubject 
Message’s subject. 
MsgType 
Sets type of current message. 
Sending Email From Visual Basic
Now that you’ve added the MAPISession and MAPIMessages control to your program 
(see the previous topic), how do you use them to send email? Let’s see an example. 
Create a new standard EXE project, and add the MAPISession and MAPIMessages 
controls MAPISession1 and MAPIMessages1. Next add two command buttons, 
Command1 and Command2, with the captions “Send email” and “Read email”. We’ll 
enable Command1, the Send Email button, in this topic, and Command2, the Read 
Email button, in the next topic. In addition, we’ll need some place to display the email 
we’ve read, so add a text box, Text1, to the form, setting its MultiLine property to 
True and its ScrollBars property to Both (3).
When users click Command1, they want to send email, and we let them do so by using 
the MAPIMessages control’s Compose and Send methods. Our first task, however, is 
to start a new MAPI session, and we do that with the MAPISession control’s SignOn 
method, after indicating that we don’t want to download email by setting its 
DownLoadMail property to False:
Private Sub Command1_Click()
MAPISession1.DownLoadMail = False
MAPISession1.SignOn
...
After signing on to the Microsoft Exchange email system, we set the MAPIMessages 
control’s SessionID  to the MAPISession control’s SessionID  property to initialize 
MAPIMessages1:
Private Sub Command1_Click()
MAPISession1.DownLoadMail = False
MAPISession1.SignOn
MAPIMessages1.SessionID = MAPISession1.SessionID
...
To compose a new email message, we have to set the MAPIMessages1 control’s 
MsgIndex property to -1 and call its Compose method:
Private Sub Command1_Click()
MAPISession1.DownLoadMail = False
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
MAPISession1.SignOn
MAPIMessages1.SessionID = MAPISession1.SessionID
MAPIMessages1.MsgIndex = -1
MAPIMessages1.Compose
...
This code displays the Compose dialog box, as shown in Figure 21.12. Users can enter 
the email text and address they want to use in that dialog box and click the Send button 
(the Send button displays an envelope in Figure 21.12) to send their email. 
Figure 21.12  Composing an email message.
When the user is done composing the email, we send it with the MAPIMessages1 
control’s Send method and sign off the MAPI session using the MAPISession1 
control’s SignOff method:
Private Sub Command1_Click()
MAPISession1.DownLoadMail = False
MAPISession1.SignOn
MAPIMessages1.SessionID = MAPISession1.SessionID
MAPIMessages1.MsgIndex = -1
MAPIMessages1.Compose
MAPIMessages1.Send True
MAPISession1.SignOff
End Sub
That’s it—we’ve sent our email. What actually happens is that the program sends the 
new email message to the user’s Outbox (which is also opened when you open the 
Inbox), and the Outbox is usually set to send email automatically. In fact, that’s the 
way the Microsoft Exchange usually works: by logging into the mail server you’ve 
specified at regular intervals. When it logs in, it sends the mail waiting in the Outbox 
and reads any waiting email, placing it in the Inbox. (In fact, now that we’ve sent 
email, we’ll see how to read that email in the next topic.) 
The code for this example, email.frm version 1 (version 2, which is located on this 
book’s accompanying CD-ROM, will let the user read email as well), appears in 
Listing 21.3.
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
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To access the contents, click the chapter and section titles. 
Visual Basic 6 Black Book 
(Publisher: The Coriolis Group) 
Author(s): Steven Holzner 
ISBN: 1576102831 
Publication Date: 08/01/98 
Bookmark It
Search this book:
Previous
Table of Contents
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Listing 21.3 email.frm version 1
VERSION 6.00
Object = "{20C62CAE-15DA-101B-B9A8-444553540000}#1.1#0"; "MSMAPI32.OCX"
Begin VB.Form Form1
Caption         =   "Form1"
ClientHeight    =   3405
ClientLeft      =   60
ClientTop       =   345
ClientWidth     =   5970
LinkTopic       =   "Form1"
ScaleHeight     =   3405
ScaleWidth      =   5970
StartUpPosition =   3  'Windows Default
Begin VB.TextBox Text1
Height          =   2175
Left            =   240
MultiLine       =   -1  'True
ScrollBars      =   3  'Both
TabIndex        =   2
Top             =   120
Width           =   5415
End
Begin VB.CommandButton Command2
Caption         =   "Read email"
Height          =   495
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
Left            =   360
TabIndex        =   1
Top             =   2520
Width           =   1215
End
Begin MSMAPI.MAPISession MAPISession1
Left            =   1440
Top             =   1920
_ExtentX        =   1005
_ExtentY        =   1005
_Version        =   393216
DownloadMail    =   -1  'True
LogonUI         =   -1  'True
NewSession      =   0   'False
End
Begin MSMAPI.MAPIMessages MAPIMessages1
Left            =   2640
Top             =   1920
_ExtentX        =   1005
_ExtentY        =   1005
_Version        =   393216
AddressEditFieldCount=   1
AddressModifiable=   0   'False
AddressResolveUI=   0   'False
FetchSorted     =   0   'False
FetchUnreadOnly =   0   'False
End
Begin VB.CommandButton Command1
Caption         =   "Send email"
Height          =   495
Left            =   4320
TabIndex        =   0
Top             =   2520
Width           =   1215
End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
MAPISession1.DownLoadMail = False
MAPISession1.SignOn
MAPIMessages1.SessionID = MAPISession1.SessionID
MAPIMessages1.MsgIndex = -1
MAPIMessages1.Compose
MAPIMessages1.Send True
MAPISession1.SignOff
End Sub
Private Sub Command2_Click()
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
MAPISession1.DownLoadMail = True
MAPISession1.SignOn
MAPIMessages1.SessionID = MAPISession1.SessionID
MAPIMessages1.Fetch
MAPIMessages1.MsgIndex = 0
Text1.Text = MAPIMessages1.MsgNoteText
MAPISession1.SignOff
End Sub
Reading Email In Visual Basic
Now that we’ve seen how to send email (see the previous topic), how do you read email? You set the 
MAPISession control’s DownLoadMail property to True.
Let’s see an example. In this case, we’ll download any waiting email into the user’s Inbox and then 
display the first message in a text box. We’ll use the program we started in the previous topic and add the 
code we need to the Read Email button’s event handler. First, we set the MAPISession control’s 
DownLoadMail property to True, then we use that control’s SignOn method to start the MAPI session 
and download any waiting email into the Inbox:
Private Sub Command2_Click()
MAPISession1.DownLoadMail = True
MAPISession1.SignOn
...
Now that the email is in the Inbox, how do we reach it? We use the MAPIMessages control’s Fetch 
method to create a message set (you can find out how many messages are in the set with the MsgCount 
property). To do that, we first set the MAPIMessages control’s SessionID property to the MAPISession 
control’s SessionID property and then use Fetch:
Private Sub Command2_Click()
MAPISession1.DownLoadMail = True
MAPISession1.SignOn
MAPIMessages1.SessionID = MAPISession1.SessionID
MAPIMessages1.Fetch
...
Next, we display the text of the first email message now in the Inbox by setting the MAPIMessages 
control’s MsgIndex to 0 and using the MsgNoteText property. (Note that in a real email program, you 
should check to make sure there really are messages waiting here, but in this case we assume there are 
because we just sent one using the Send Email button—note that if your system takes significant time to 
deliver email messages, you might have to alter this code.) Finally we sign off the MAPI session:
Private Sub Command2_Click()
MAPISession1.DownLoadMail = True
MAPISession1.SignOn
MAPIMessages1.SessionID = MAPISession1.SessionID
MAPIMessages1.Fetch
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
MAPIMessages1.MsgIndex = 0
Text1.Text = MAPIMessages1.MsgNoteText
MAPISession1.SignOff
End Sub
And that’s it—we can now receive email, as you see in Figure 21.13. Now we’re sending and receiving 
email with Visual Basic. 
Figure 21.13  Receiving email.
The code for this example is located in the email folder on this book’s accompanying CD-ROM. 
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Copyright © 1996-2000 EarthWeb Inc.
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Visual Basic 6 Black Book:Visual Basic And The Internet: Web Browsing, Email, HTTP, FTP, And DHTML
Click Here!
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Brief
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To access the contents, click the chapter and section titles. 
Visual Basic 6 Black Book 
(Publisher: The Coriolis Group) 
Author(s): Steven Holzner 
ISBN: 1576102831 
Publication Date: 08/01/98 
Bookmark It
Search this book:
Previous
Table of Contents
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Using The Internet Transfer Control For FTP And HTTP Operations
You use the Microsoft Internet transfer control to handle FTP and HTTP operations in 
Visual Basic. Using the HTTP protocol, you can connect to World Wide Web servers 
to retrieve HTML documents. With the FTP protocol, you can log on to FTP servers to 
download and upload files. 
The UserName and Password properties allow you to log on to private servers that 
require authentication. Otherwise, you can connect to public FTP servers and download 
files. The common FTP commands, such as CD and GET, are supported through the 
Execute method. You can keep track of the Internet transfer control’s operations with 
the StillExecuting property. If this property is True, the control is working on a 
transfer and will not respond to other actions.
The Internet transfer control performs asynchronous Internet transfers, so besides the 
StillExecuting property, Microsoft has given the control a StateChanged event. In this 
event’s handler procedure, you are kept up-to-date on what’s going on with the Internet 
transfer control:
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